About
Zero21 Solitaire is a single player action game. It was developed by autumnmeaning and was released on February 12, 2026.
Game Profile Title: Zero 21 Solitaire Genre: Puzzle / Math Card Game / Logic Platform: HTML5 (PC & Mobile Browsers) Target Audience: Math whizzes, Sudoku fans, Logic lovers, Brain trainers Core Experience: Mental Math, Anticipation, Crisis Management Description Zero 21 Solitaire is a minimalist number puzzle game. The interface typically consists of your "Current Sum" in the center, sur…

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Frequently Asked Questions
Zero21 Solitaire is a action game.
Zero21 Solitaire is available on Web Browser, Mac OS, Phone, Windows and others.
Zero21 Solitaire was released on February 12, 2026.
Zero21 Solitaire was developed by autumnmeaning.
Zero21 Solitaire is a single player game.
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